body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--fs-gradient-surface);
    position: relative;
    overflow: hidden;
}
/* Background glow effects */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(59, 130, 246, 0.06) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(139, 92, 246, 0.04) 0%, transparent 50%);
    animation: bgShift 20s ease-in-out infinite;
}
@keyframes bgShift {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-2%, -1%); }
}

.auth-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.auth-card {
    background: var(--fs-glass);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--fs-glass-border);
    border-radius: var(--fs-radius-xl);
    padding: 40px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}
.auth-logo .logo-icon {
    width: 60px;
    height: 60px;
    background: var(--fs-gradient-primary);
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 12px;
    box-shadow: var(--fs-shadow-glow);
}
.auth-logo-img {
    border-radius: 0;
    background: none;
    box-shadow: none;
    width: 80px;
    height: auto;
    margin-bottom: 12px;
}
.auth-logo h1 {
    font-size: 1.5rem;
    background: var(--fs-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.auth-logo p {
    color: var(--fs-text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-form .btn { width: 100%; padding: 12px; margin-top: 8px; }

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--fs-text-muted);
}
.auth-footer a { color: var(--fs-accent); }

.auth-error {
    background: var(--fs-error-glow);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--fs-error);
    padding: 10px 14px;
    border-radius: var(--fs-radius-md);
    font-size: 0.85rem;
    display: none;
}

.auth-success {
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--fs-success);
    padding: 10px 14px;
    border-radius: var(--fs-radius-md);
    font-size: 0.85rem;
    display: none;
}

.key-warning {
    background: rgba(234, 179, 8, 0.08);
    border: 1px solid rgba(234, 179, 8, 0.3);
    border-radius: var(--fs-radius-md);
    padding: 16px;
    display: none;
}
.key-warning h3 {
    color: var(--fs-warning);
    font-size: 0.9rem;
    margin-bottom: 8px;
}
.key-warning p {
    color: var(--fs-text-secondary);
    font-size: 0.8rem;
    margin-bottom: 12px;
    line-height: 1.5;
}
.key-warning .key-actions {
    display: flex;
    gap: 8px;
}
.key-warning .key-actions .btn {
    font-size: 0.8rem;
    padding: 8px 14px;
}

.password-requirements {
    font-size: 0.75rem;
    color: var(--fs-text-muted);
    margin-top: -8px;
}